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Allow keyboard:
j k ← →: freq down/up (+shift or +ctrl/alt)
b B: band up/down
u l c a f: USB, LSB, CW, AM, FM
z Z: center/zoom waterfall
g: enter frequency
m: toggle mute
s: toggle squelch
n: toggle notch



 Space comm.:


? dBm   peak: ? dBm


  == 2m WebSDR Maasbree ==

Signal strength plot:


Or tune by clicking/dragging/scrollwheel on frequency scale.

Or use scroll wheel and dragging on waterfall.


  ?  kHz@-6dB   Pitch: ? ?  Hz
Or drag the passband edges on the frequency scale.

This WebSDR is currently being used by ? user(s) simultaneously:      compact view


2m WebSDR === Maasbree === (offline during local thunderstorms)

The 2m WebSDR Maasbree is operated by PH4RTM. It is located in Maasbree JO31AI (QTH PH4RTM).
Receiver: SDRplay RSP1a
Antenna: vertical Diamond300
The HF WebSDR Maasbree is at:

Note 1 Firefox is the preferred browser.
Code from the Utah WebSDR (tks!) is added for support of Chrome, Apple, etc. Go to this Utah site for more info if needed.
Note 2 If you have a mobile phone, try this one: ==> Mobile version <==
Note 3 CATSync allows you to synchronize the WebSDR with your real rig.

Frequency can be set by:
- Preset buttons
- Clicking/dragging/scrollwheel on frequency scale
- Direct input in frequency field
- Fine tuning in +/-10Hz steps (or select up or down 10Hz button and use enter key or spacebar)
- Keyboard shortcuts !
- Band selection buttons
- Memories
- Click on memory labels in waterfall
- Bookmarks e.g.:
- CATSync and your own transceiver

CW pitch can be set by e.g. the shift buttons.

Keyboard shortcuts (tick Allow keyboard):
j k ← →: freq down/up (+shift or +ctrl/alt)
b B: band up/down
u l c a f: USB/LSB/CW/AM/FM
z Z: center/zoom waterfall
g: enter frequency
m, s, n: toggle mute, squelch, notch

WebSDR is a very strong concept developed by PA3FWM!
More information about the WebSDR project can be found on

© Copyrights Graphical User Interface (GUI) design of this WebSDR: PA0SIM and PE0MJX
Copying the GUI design partially or completely is allowed with proper source reference for non commercial WebSDR use only.